Knull Data Science Vocabulary

If you are able to survey every member of a population, it is called a.....

• Observational Study

• Experiment

• Sample

• Census

A radio host asks his listeners to call in to give their opinions. This is an example of ______________________________

• Convenience Sampling

• Voluntary Response Sampling

• Double Blind Experiment

• Response Bias

To choose a sample, a researcher surveys the first 50 people she can find. This is an example of......

• A Simple Random Sample

• Convenience Sampling

• Voluntary Response Sampling

• Random Assignment

In a ______________________ , neither the subjects nor those measuring results know which subjects are getting which treatment

• Experiment

• Control Group

• Double Blind Experiment

• Observational Study

To create a sample, I randomly choose 20 students from each class (freshman, sophomore, junior, and senior). This is an example of a .....

• Convenience Sample

• Simple Random Sample (SRS)

• Voluntary Response Sample

• Stratified Random Sample

In an _________________ , the researcher imposes treatments on subjects, then measures results

• Observational Study

• Experiment

• Wording of Question Bias

• Undercoverage

If I am observing subjects or surveying them, this is called a(n) _________________

• Experiment

• Observational Study

• Census

• Simple Random Sample

Subjects often actually respond to a dummy treatment. This is an example of the _______________

• Control Group

• Response Bias

• Undercoverage

• Placebo Effect

The entire set of people, objects, etc. being studied is called the _______________

• Sample

• Wording of Question Bias

• Census

• Population

500 surveys are sent out, but only 340 are sent back in. This could result in ...

• Non Response Bias

• Response Bias

• Undercoverage

• Placebo Effect